Fatal error: Uncaught Error: Interface "Magento\Framework\Setup\UpgradeSchemaInterface" not found in /home/airtimer/public_html/vendor/amzn/amazon-pay-module/Setup/UpgradeSchema.php:43 Stack trace: #0 {main} thrown in /home/airtimer/public_html/vendor/amzn/amazon-pay-module/Setup/UpgradeSchema.php on line 43